momlhon



2 Sheets-Sheet 1.7

(No Model.)

P. J. M'OMAH N. AMMONIAGAL GAS MOTOR 0R ENGINE.

Patented J an. 28

w W J E WITNESSES:

Arrow/Er N PETERS, Pholn-Liflmgnpher. Walhington. nc.

(No Model.) I 2 Sheets-Sheet 2.

P. J. MGM'AHON. AMMONIAGAL GAS MOTOR 0R. ENGINE.

No. 420,241. Patented Jan. 28, 1890.

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UNITED STATES PATENT FFICE.

PATRICK J. MOMAHON, OF NEW ORLEANS, LOUISIANA, ASSIGNOR TO THE STANDARDFIRELESS ENGINE COMPANY, OF SAME PLACE.

AMMONlACAL-GAS MOTOR OR EN GINE.

SPECIFICATION forming part of Letters Patent No. 420,241, dated January28, 1890.

Application filed July 16, 1887. Serial No. 244,492. (No model.)Patented in France December 2, 1887,1T0. 3,508, and in England December9, 1887, No. 10,897.

To aZZ whom it may concern:

Be it known that I, PATRICK J. MoMAHoN, a citizen of the United States,residing at New Orleans, in the parish of Orleans, State of Louisiana,have invented certain new and useful Improvements in Ammoniacal GasMotors or Engines, (for which I have obtained Letters Patent in GreatBritain December 9, 1887, No. 10,897, and in France December 2, 1887,No. 3,503,) of which the following is a specification, reference beinghad therein t the accompanying drawings. f

This invention has relation to an ammoniacal-gas motor or engine andgenerator combined, and among the objects in View are to provide anapparatus of the above character which is adapted to be charged at astationary plant with ammonia, and to develop the power thereof andutilize the same at any place remote therefrom.

Other objects and advantages of the invention will hereinafter appear,and the novel features thereof will be pointed out in the claims.

Referring to the drawings, Figure 1 is a side elevation of thegenerator-cylinder. Fig. 2 is a transverse section of the same on theline a: m. Fig. 3 is a side elevation of the solution-tank, thegenerator-cylinder being in position therein. Fig. 4 is a transversesection on the line i y of Fig. 3. Fig. 5 is a side elevation of thesolution-tank, engine, and their connections. Fig. 6 is a centrallongitudinal section of thesolution-tank and generator-cylinder; andFig. 7 is an end elevation of the solution-tank, showing means forcharging the same with ammonia from the plant.

Similar letters of reference indicate like parts in all the figures. 1

A represents the solution-tank, which is airtight, and mounted thereinis the generatorcylinder B, which is of cylindrical form, and providedwith the longitudinally-disposed tubes B, extending through both headsof thecylinder, and communicating with a chamber B by means of a smallertube B acting as a siphon. The cylinder is mounted Within the tank Aupon legs or standards B secured ing from the top of the tank A, andprovided with a cut-off or valve D A pipe E, having a cut-off or valveE, projects from the tank' A, near the lower end thereof, and isconnected with the pipe D by means of a glass gage-tube E whereby thelevel of the liquid within the tank may be observed from the outside. Anexhaust-pipe F, having a discharge-branch Ff leading therefrom to thetank and communicating with the chamber B is connected to the cylinderor jacket 0, and the lower end of said pipe communicates with thesolution-pipe G, leading from the bottom of the tank A to the bottom ofthe jacket 0 by T-coupling F An overflow-pipe H is connected at the topof the jacket C, and extends down and is connected to the solution-pipeG, said pipe H, and also theexhaust F, being connected to thesolution-pipe G by means of an'ordinary T-coupling H and siphonT-couplings F and G.

v I represents the air-escape and gas-trap, and is connected to the topof the tank A by means of a pipe 1, leading therefrom to and below thewater-line Z in the trap. In this manner the air is forced by theammoniacal gas from the tank, is carried to the trap, and is filteredthrough the water therein, whereby all gas is extracted and absorbed bythe water, and the air may then pass out of the outlet P. By thisarrangement not only is a great waste prevented, but unpleasant odorsfrom the ammonia cannot escape. Afterward the ammonia may be extractedfrom the water and again utilized.

Branching at a right angle from the pipe AIS is the branch pipe E havingat its outer end asuitable coupling E and provided with an intermediatecut-off E.

J represents the tank supply-pipe, which is provided with a coupling Jat its end and an intermediate cut-ofi J A pipe X leads from astationary plant,

(not shown,) the construction and operation of which are set forth in myapplication Serial the solution-tank A is charged with the weaksolution. Through the pipe E when the strength or density of a chargehas been expended, it is withdrawn from the cylinder,

and when the weak solution becomes concentrated the same is drawn ofithrough thepipe J.

When the tank and generator-cylinder are to be charged, the stop-cocksor cut-ofis E J 2 {are closed, and the charging-pipes (betweenthestop-cocks therein and those leading to the generator-cylinder andtank) are emptied an'daparti'al vacuum produced in them be- I forecharges are introduced. This is accom- 'plished through the small pipeK, which leads to a vessel Z of the stationary plant in which "a vacuumis maintained, as described in my aforesaid application. I v

In charging my apparatus, the generatorcylinder B is filledwithanhydrous ammonia to the line 1 2, (see Fig. 2,) and the tank is filledto the line 3 4 (see Fig. 4) with the weak solution to reabsorb the gas.I

Referring more particularly to Fig. 4, in which is shown the gas-trap orairescape, the "use of this device will be apparent, in that when theengine is putin operation the level of the liquid ammonia will graduallyfall belowthe line 1 2 by reason of the evaporation eration of theengine it is absorbed by the solution, and the level of the solutionwill gradually rise below the line 3 4. Now the" space'above this lineis full of air before the starting, and it is necessary to dispose of itin'some way. It would not do to have it escape directly into thesurrounding atmosphere, as it would make bad and disagreeable odors,

- "and the 'ammoniacal gas contained therein ,would be also wasted.Furthermore, should it be allowed to remain during the operation "of theengine, the increasing volume'of the "solution would compress the sameand prod'uce back-pressure on the exhaust side of the piston. Thereforeto avoid these objections the air is conducted from'the top of the tankthrough the pipe 1 down below the watertrapped and absorbed by the waterand the remaining air is conducted up and out through the escape I Theprovision of the partitions B which extend the length of thegenerator-cylinder B, is for the purpose of confining the solution whichhad been heated by the absorption of the gas to the bottom of thegenerator until it has reached the opposite end thereof, and thereby tosecure the circulation of the solution the whole length of the generatorunderneath it as well as through the tubes to accomplish the completeabsorption of the gas as well as the application of the heat renderedsensible thereby to the metallic surfaces around which the anhydrousammonia is distributed, The solution becomes cooler as it approaches therear end of thegenerator and passes out and "circulates back to thefront end of the generator outside of the partitions. The exhaust fromthe cylinder makes itcirculate around continuously in this course whilethe engine is working, and this accomplishes the desired object. I

By opening the cock D gas issupplied from the top of cylinder B to theenginefcylinder, it being regulated by the throttle D. The piston havingbeen operated, the gas passes down through the lex haust pipe F, part ofsaid exhaust-pipe passing through the 'pipeF into the tubes B of thecylinder, the remaining through the siphon-coupling F circulating thesolution from the tank through pipe G into the lower end of the casingand up through the overflow-pipev H, andb'ack to the tank A, while theother portion of the ex haust enters the siphon-coupling G and assiststhe circulation through the jacket That portion of the exhaust whichenters 'the si= phon coupling G becomes absorbed in the solution,passingup the pipeG, giving out its latent heat, and heating the solution 'asit passes into the jacket or casing. By this means the jacket-cylinderis not' only pre vented from freezing, but is su erheated, and thiswithout the application of externalheat. The solution overflowing -fromthe jacket is again met by a portion of the exhaust through the siphonH, where it acquires additional heat 'by the absorption of this gas andis made to circulate through under the cylinder, keeping up thetemperature of its surface, as previously described, as well as that ofthe tubes, so that the evaporation of the gas in the generator is keptup in the most'efficient manner while the engine is in'opcratipmandthe'engine-cylinder is also kept superheated. There is a materialadvantage in arranging the component parts in the generator, cs

pecially the cylinder-tubes, in a horizontal erator of unabsorbed gas,which would tend to produce back-pressure on the piston.

Certain features of construction herein claimed are shown but notclaimed in my companion application, Serial No. 244,491.

Having described my invention and its operation, what I claim is 1. In agenerator of the class described, a tank, a cylinder arranged within thetank free from its walls, partitions arranged parallel with thecylinder, and an exhaust-pipe arranged beneath the cylinder and betweenthe partitions, substantially as specified.

2. The combination, with the cylinder of a motor and with the jacketthereof, of a generator and a surrounding reabsorbing tank, a supplypipeextending from the gen erator to the motor-cylinder, and pipescommunicating with the jacket of the cylinder and directly with theabsorbing-tank, and siphon-couplings arranged in said pipes to producethe circulation of reabsorbent liquid directly from the tank into andthrough the jacket of the cylinder and directly back to the tank,substantially as specified.

3. The combination, with the cylinder of a motor, of a generator,a-supply-pipe extending from the same to themotor-cylinder, andexhaust-pipes, one extending from the motor-cylinder to the tank of thegenerator and communicating with the tubes of the cylinder therein, andthe other extending from the motor-cylinder to and beneath said cylinderwithin the tank of the generator, substantially as specified.

4. The combination, with a motor and a generator of the class described,and provided with tubes, of an exhaust-pipe extending from the motor tothe generator and entering said tubes to produce a circulation of thereabsorbing liquid thereth rough, substantially as specified. V i V Intestimony whereof I aftix my signature in presence of two witnesses.

PATRICK J MOMAHON.

Witnesses B. F. MoRsELL, W. S. DUVALL,

